I swapped out the stock opamps on my Minibox-E+ a while back and must have done something incorrectly at the time. Quoting from an earlier post by me:
(see also photos I posted of the amp after soldering in the new Brown Dog adapters)
Is anybody out there willing to take a look at my amp and repair it if possible? I don't have any soldering skills, nor the ability to access soldering equipment at this time. Willing to pay a modest fee for the service!
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Originally Posted by macfly
 I finally got a chance to stop by my dad's to get some soldering assistance. Got the stock AD's out of there and soldered in the new adapters, then seated the LME49710s into the sockets. I thought we did pretty well, but something must have gone wrong, because now the Minibox outputs sound on the right channel at an incredibly loud and brash volume. When turning the volume knob to a mere 0.5, the sound is deafening, and it distorts the hell out of my Etymotic ER4Ps. There's also a loud hiss present on the right channel regardless of whether anything is plugged into the Minibox input or not.
What could we have possibly done wrong? Our soldering job wasn't the prettiest or cleanest, but we took great care not to let the tip of the iron touch any of the other components on the PCB. I'm feeling pretty bummed that after all of this preparation and parts ordering, I'm left with an amp in worse condition than before. I suppose I'll see if Fang can repair the amp, if it's even repairable? Before I contact him though, any ideas as to what might be causing the amp to act the way I described? Tomorrow I'll open it up again and try re-seating both opamps, maybe that will do the trick. Again, much thanks for all of the information and assistance thus far. |
Is anybody out there willing to take a look at my amp and repair it if possible? I don't have any soldering skills, nor the ability to access soldering equipment at this time. Willing to pay a modest fee for the service!
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